Climate at a Glance

Statewide Rankings

Look up monthly rankings for 1-12, 18, 24, 36, 48, and 60-month time periods using the options below. Data and statistics are as of October 2019. For more information, please see Climatological Rankings.


Iowa

Precipitation Rankings, May 1978

View Period (Months):All1234567891011121824364860
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  • Record Wettest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2019)
Wettest/Driest
Since
Record
May 1978
1-Month
3.76"
(95.50mm)
4.05"
(102.87mm)
-0.29"
(-7.37mm)
53rd Driest Driest since: 1977 1934
73rd Wettest Wettest since: 1974 2013
Ties: 1930
Apr–May 1978
2-Month
8.40"
(213.36mm)
6.99"
(177.55mm)
1.41"
(35.81mm)
87th Driest Driest since: 1977 1934
39th Wettest Wettest since: 1974 2013
Mar–May 1978
3-Month
9.11"
(231.39mm)
8.95"
(227.33mm)
0.16"
(4.06mm)
65th Driest Driest since: 1971 1934
61st Wettest Wettest since: 1977 2013
Feb–May 1978
4-Month
9.89"
(251.21mm)
9.96"
(252.98mm)
-0.07"
(-1.77mm)
59th Driest Driest since: 1977 1934
67th Wettest Wettest since: 1976 2013
Jan–May 1978
5-Month
10.48"
(266.19mm)
10.94"
(277.88mm)
-0.46"
(-11.69mm)
51st Driest Driest since: 1977 1934
75th Wettest Wettest since: 1976 2013
Dec 1977–May 1978
6-Month
11.54"
(293.12mm)
12.04"
(305.82mm)
-0.50"
(-12.70mm)
50th Driest Driest since: 1977 1934
75th Wettest Wettest since: 1976 2013
Ties: 1899
Nov 1977–May 1978
7-Month
13.19"
(335.03mm)
13.78"
(350.01mm)
-0.59"
(-14.98mm)
51st Driest Driest since: 1977 1934
74th Wettest Wettest since: 1976 2013
Oct 1977–May 1978
8-Month
17.31"
(439.67mm)
16.10"
(408.94mm)
1.21"
(30.73mm)
77th Driest Driest since: 1977 1934
48th Wettest Wettest since: 1976 2019
Sep 1977–May 1978
9-Month
22.00"
(558.80mm)
19.79"
(502.67mm)
2.21"
(56.13mm)
85th Driest Driest since: 1977 1934
40th Wettest Wettest since: 1974 2019
Aug 1977–May 1978
10-Month
30.20"
(767.08mm)
23.65"
(600.71mm)
6.55"
(166.37mm)
113th Driest Driest since: 1977 1934
12th Wettest Wettest since: 1973 2019
Jul 1977–May 1978
11-Month
34.19"
(868.43mm)
27.54"
(699.52mm)
6.65"
(168.91mm)
112th Driest Driest since: 1977 1934
13th Wettest Wettest since: 1974 2019
Jun 1977–May 1978
12-Month
36.86"
(936.24mm)
32.14"
(816.36mm)
4.72"
(119.88mm)
100th Driest Driest since: 1977 1934
25th Wettest Wettest since: 1974 2019
Ties: 1945
Dec 1976–May 1978
18-Month
47.38"
(1,203.45mm)
44.20"
(1,122.68mm)
3.18"
(80.77mm)
86th Driest Driest since: 1977 1934
38th Wettest Wettest since: 1974 2019
Jun 1976–May 1978
24-Month
57.76"
(1,467.10mm)
64.29"
(1,632.97mm)
-6.53"
(-165.87mm)
21st Driest Driest since: 1977 1957
103rd Wettest Wettest since: 1976 2011
Ties: 1911
Jun 1975–May 1978
36-Month
88.81"
(2,255.77mm)
96.33"
(2,446.78mm)
-7.52"
(-191.01mm)
22nd Driest Driest since: 1977 1958
101st Wettest Wettest since: 1976 2011
Jun 1974–May 1978
48-Month
119.52"
(3,035.81mm)
128.31"
(3,259.07mm)
-8.79"
(-223.26mm)
19th Driest Driest since: 1959 1957
103rd Wettest Wettest since: 1977 2011
Jun 1973–May 1978
60-Month
157.94"
(4,011.68mm)
160.32"
(4,072.13mm)
-2.38"
(-60.45mm)
45th Driest Driest since: 1971 1958
76th Wettest Wettest since: 1977 2019

Citing This Page

  • NOAA National Centers for Environmental information, Climate at a Glance: Statewide Time Series, published November 2019, retrieved on November 21, 2019 from https://www.ncdc.noaa.gov/cag/